Problem a/c always on
#1
Problem a/c always on
Hi I have a weird problem with my A/C. my car is a 2003 ap1 with custom turbo kit hx35 with a full build motor and running Doctronic pro ecu
The problem started last year randomly.
When i Start the car with interior fan at off the ac clutch isnt engaged (which is normal)
If i set any fan speed on without activating a\c the ac clutch isnt enganged (which is normal)
If i set Ac On, it engage but even if i turn it off after a while, the clutch will stay engaged and fans will run until i shut off the car.... (which i think isnt normal)
I can clearly see when the ecu receive the signal for ac clutch in my log and will stay on all the time until I turn off the car otherwize will run even with heat off
Any idea?? sorry for my bad english i'm a french native and I have a really hard time to explain
The problem started last year randomly.
When i Start the car with interior fan at off the ac clutch isnt engaged (which is normal)
If i set any fan speed on without activating a\c the ac clutch isnt enganged (which is normal)
If i set Ac On, it engage but even if i turn it off after a while, the clutch will stay engaged and fans will run until i shut off the car.... (which i think isnt normal)
I can clearly see when the ecu receive the signal for ac clutch in my log and will stay on all the time until I turn off the car otherwize will run even with heat off
Any idea?? sorry for my bad english i'm a french native and I have a really hard time to explain
#2
You have the options set to blowing up onto windshield? You turn fan on, I think the A/C automatically flips on? Kind of a "defrost" or "de-fog" mode.
#3
The AC is automatically activated when air is directed to the windshield vents. This is user-settable with a series of switch presses. Defaults back if the battery is disconnected.
How to disable AC when defrost is selected.
-- Chuck
How to disable AC when defrost is selected.
-- Chuck
#5
Does he need to replace the unit? Or just fix (reprogram?) it?
Thanks!
Thanks!
#6
Verify why it stays on. Data capable scanner not code reader. Identify what is keeping it on and check inputs and outputs. The one I dealt with had faulty chip in module. Rare but does happen .....usually with help from shorting out from external issue. Used control units are cheap.
#7
Thanks! Be nice if the OP would respond to the suggestions.
Thread
Thread Starter
Forum
Replies
Last Post
LostWaffle
S2000 Talk
8
02-25-2003 02:05 PM